Last seen: Jul 26, 2025
I finally found something in the minimalmodbus manual on how to read individual bits from a 16 bit register: Reading individual bits from a 16-bit...
@derek-m - thanks. There are lots of versions of this table around, and they are all slightly different. Here's a scan of the same part of the table f...
@derek-m - I am very wary of writing to any register until I am absolutely sure what I am writing to, hence the attempts to reliably read the data bef...
@derek-m - I agree, see above, the efficiency loss caused by raising the LWT matters, but I still think empirical data is the best way to determine ho...
I have in fact covered this elsewhere, things do get rather scattered all over the place, and @derek-m also covers it above. It is one of the factors ...
Another possibly (or possibly not) interesting insight. I have now changed (in the data file) the Set LWT during the non WC period to what it actually...
I have now determined that the 1800 run of the auto-adapt script yesterday somehow turned off the WCC, and put the heat pump into fixed flow temp mode...
"Which of those wins" - that is exactly the question that I am trying here to answer empirically. It is fair to say that a number of opinions have bee...
But we aren't trying to back fill the preceding valley, so to speak. Consider setbacks of varying lengths, let's say four hours and eight hours (set b...
This is absolutely the way to go, and the only way to get real world answers. Your sudden jump at 0700 (which I think may refer to 0600 to 0700, de...
@gary @newhouse87 - I don't have UFH or an off peak tariff, so my current strategy is a bit different. I do have a house with a high thermal mass for ...
Standard weather compensation doesn't work well with setbacks, the logic uses only the OAT and doesn't know the IAT is below what it should be. I di...
Latest Posts
-
RE: No-code, plug-and-play monitoring for your heat pump
By Grantmethestrength , 11 hours ago
-
@eliuccio good to hear you’re happy with the install. A...
By Mars , 21 hours ago
-
RE: Is this just haze or something more?
I am not a scientist nor a meteorologist and I know the...
By Toodles , 2 days ago
-
RE: Benefits of an extra horizontal loop for GSHP
It will improve performance, but by how much depends on...
By Brendon Uys , 2 days ago
-
RE: The good, the bad and the not that great – my heat pump installation
Said I would pop back with a update. Only Mr Jesus h...
By Burtis , 2 days ago
-
RE: Buffers, hot water and cooling
Thats presumably heat pump DT, what about radiator DT a...
By JamesPa , 2 days ago
-
RE: Who's your electricity provider and what's your tariff?
@chandykris Exactly the same here. We now have 13.5kWh ...
By Old_Scientist , 3 days ago
-
Compressor and Evaporator Stratification
I have had a few issues with my Hitachi spilt heatpump ...
By trebor12345 , 3 days ago
-
RE: Wood burner with ASHP - direct air?
This depends on the size of your wood burner and size/t...
By Lucia , 3 days ago
-
RE: Difficult positioning of air source heat pump
@rikiarn It's a not a buffer it's a volumiser which is ...
By Lucia , 3 days ago
-
RE: Is your heat pump insured?
To make things clear, lots of insurance companies cover...
By Lucia , 3 days ago
-
RE: Boxt Heat Pump Installation Experience
@adrian any updates since installation? How is it perfo...
By Ashfp , 4 days ago
-
RE: Say hello and introduce yourself
Hi @seatonian - Yes, I know Seaton, and I have the Nat...
By Transparent , 5 days ago
-
@seatonian got your email. Will connect you with a reco...
By Mars , 5 days ago
-
@downfield and @toddles, this isn’t in the settings cur...
By Mars , 1 week ago
-
RE: Homely launched for Grant Aerona ASHP control
I haven't bought the Aerona Smart Controller (£700!) bu...
By Prunus , 1 week ago
-
RE: Antifreeze top up for my heat pump - is this a rip off?
For the record, Grant supply ethylene glycol for their ...
By Prunus , 1 week ago
-
RE: Compressor attempts start but fails - Nibe Fighter 2005 8kW
@skyefarmer amazing. Well done!
By Mars , 1 week ago
-
RE: Air source heat pump roll call – what heat pump brand and model do you have?
Ebac 5kw - Monobloc R32. Developed and made in UK - Mit...
By marcinwloch69@gmail.com , 1 week ago
-
RE: Is a Valliant Inline 6kW heater a BUS buster?
Just another thought - it might be worth thinking about...
By JamesPa , 1 week ago
